I fall into the during Sushi era, but just barely.
Fred, I also have the M22s and even with a sub they are not as good as the M80s. If I had never heard them side by side I wouldn't know I was missing out, unfortunately for my wallet, I did hear them A/B'd and there is a difference. I felt that the M22s were always on top of the bass from the sub, while the M80s alone or with a sub just blended everything very well.
Now it may have been we didn't have the sub set up quite right for the M22's, or maybe Axioms brick wall 100hz max for their subs prevented a good blend, but the M80s being able to play down to 40hz evenly makes a huge difference in the feel of the music, IMO.
